The merchant lowered cost by 10% in December when it was not sold. Again in January lowered cost by 20% and now costs 576 €.
A. How much did the goods stand originally?
B, how much cost the goods after the first lowering?
C, How many percents of total merchant lower cost?

Correct answer:

a =  800 EUR
b =  720 EUR
c =  28 %

Step-by-step explanation:

a (110/100) (120/100)=576  72a=57600  a=7257600=800  a=800=800 EUR
b=a (110/100)=800 (110/100)=720 EUR
c=100 aa576=100 800800576=28%

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